The Colony Mud 1c, TX
Lead detected, under the action levels
Latest 90th-percentile lead: 0.55 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
The Colony Mud 1c at a glance
The Colony Mud 1c serves about 219 people through 73 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Bastrop County, Texas. EPA system ID: TX0110055; phone on file: 512-435-2300. They can tell you what your service line is made of and whether they pay to replace it.
The Colony Mud 1c's lead record
Against the period ending 2025 (0.62 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for The Colony Mud 1c is 0.62 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.55 ppb |
| 2025 | 0.62 ppb |
How The Colony Mud 1c compares
Of the 4,447 Texas systems with a lead result, the median latest reading is 0.28 ppb; 15 are over 15 ppb right now and 202 have gone over at some point. The Colony Mud 1c's 0.55 ppb sits at the 54th percentile in Texas and the 44th nationally (higher means more lead).
Other water systems in Bastrop County
21 other systems share Bastrop County; 8 of them have a higher latest lead result than The Colony Mud 1c. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aqua Wsc | 86,325 | 1.39 ppb |
| City Of Bastrop | 13,209 | 0 (not detected) |
| City Of Elgin | 13,188 | 0 (not detected) |
| Bastrop County Wcid 2 | 7,269 | 1.41 ppb |
| City Of Smithville | 4,901 | 0.98 ppb |
| The Colony Mud 1a | 2,262 | 0 (not detected) |
| Bastrop County Wcid 1 | 696 | 0 (not detected) |
| The Colony Mud 1b | 657 | 0 (not detected) |
| The Colony Mud 1e | 468 | 0.24 ppb |
| Bastrop County Mud 1 | 354 | 0.56 ppb |
Next steps for Austin, TX
Test your own tap with a certified lab first-draw sample; Austin, TX may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask The Colony Mud 1c whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. The action level is dropping - the 10 ppb rule from 2027.